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(No Madel.) 2 Sheets-Sheet 2 H, J. HAIGHT.

THERMOMETER 0R THERMOSGOPE. No. 356,761. Patented Feb, 1, 1887.

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HENRY J. HAIGHT, OF NEW YORK, N. Y.

THERMOMETER OR THERMOSGOPE.

SPECIFICATION forming part of Letters Patent No. 356,761, dated February 1, 1887, Application filed July 29,1885. Serial Ho. 172,963. (1% modeLl To all when?) it may concern:

Be it: known than 1', Hnsnv J. Hinder, of the city, county, and State of flow York, have invented an Improved Thermoscope; and I do hereby declare that the following is a full and exact} description thereof, reference being had to lahe accompanying drawings, mekingperl; of this specification.

My present invention is especially applicable to and intended for doors, windows, and thin walls or partitions by placing the therinometrio coil on one side thereof and the indoses and scale on the other side of the same, so that the door or window is not required to he opened or e passage made to the other side of the well or partition in order to observe the temperature on the other side.

The invention is especially applicable to refrigerators, refrigerator-cars, and icehonses by attaching it to the doors thereof, to observe the temperature Within without opening the same, or to the rooms of dwellings by act-aching it to a, Window of the same, so that a person in the room may observe the outside temperature without going out of doors or exposing ones self to the outer atmosphere or the weather. 7

In this invention I employ a therniometric coil, preferably such as described in Letters Patent granted to me August; 5, 188-1, No. 302,908; also, current temperature and high andlow extrchic-temperatureindexes and scale similar to the corresponding ports in the said Letters Patent; but I do not confine my present invention to the construction therein shown.

In the accompanying drawings, Figure 1 represents the scale and index side of the thermoscopc constructed and arranged according to my present invention; Fig. 2, a side edge View of the instrument; 3, the coil side of the instrument; and Fig. 4, a central vertical section of the instrumentin in plane indicated by the line :0 or, Fig. 3.

Like lehters designate corresponding parts in all of the figures.

In the drawings, A represents the thermo metric coil; B, the current-temperatere index moved by the coil; 0, the scale; D, the highextreme temperature index, and E the low-ex- 5o treme temperature index.

The currenotemperature index B is moved by the coil. A through the arm a on lahe movable end of the coil, coupled to the arm b on one end of the shaft 0, to which the index Bis attached, all in a manner similar to the construction shown in the said Letters Patent. Instead of paper, milk-glass or other semitranspareni; material may be used for this scale where lahe light; may shine through.

The indexes and scale may be inclosed in a suitable case, G, of the form shown, or otherwise, and the case may have :1 glass cover or door to exclude dust, though I have shown none. I find it preferable, for the sake of economy and convenience, no prinh the scale C on a card or paper board, (1, which is placed in the bottom of the case G, and is therefore removable and exchangeable with other scales at will.

New, glass pane or thin door-panel or partition, H, as shown in the drawings, so than the indexes and scale shall be on one side and the coil on the other side thercofi-I employ a cap, I, on which the coil A is mounted by a projecting stud, e, as also a tubular hearing, J, in which the index-shaft- 0 turns. This cap has a cylindrical rim, f, of suflioient depth, and having a screw-thread cut on its outer periphery, as shown in Figs. 2 and d. This cap, which is connected fixedly with the dial-plate or back of the ease G, forming an extension thereof, by means of bolts or screws h 71, projecting from the back of the case through the cap and secured to the same by the nuts 71 i, as shown in Fig. l, or by other suitable means, is to be inserted through o round hole out in the window-pane, door-panel, or partition, and is intended to extend ohro ugh the same and project somewhat, beyond on the other side thereof. Then upon the periphery of the cap a screwbhrcaded flanged nut, K, is screwed until it closely presses o 'uinsls that side of the pane, panel, or partition and draws the ease G or dial-plate close up to the other side of the same. The flanged nut K is broad enough to furnish a sufficient flat surface to press against the pane, panel, or partition, as indicated in the drawings. A number of knobs or projections, g g 9, (three, more or fewer,} are formed on or attached to the outer side of the flange to turn it; by in screwing it on or off.

Theinstru meno is easily and cheaply applied.

1 claim as my invention in order to apply this instrument to a The thermoscope constructed with the inrim being adapted to extend through an aperr0 dex-case G, cap I, attached to the back of the ture in a. pane, panel, or partition, H, and to case and having a cylindrical rim, f, project be fastened therein by the said nut, substaning backward therefrom, coil A, mounted on a tially as and for the purpose herein set forth.

5 stud, e, projecting from the cap inside of its HENRY J; HAIGHT rim, tubular bearing J for the index-shaft,

mounted on the cap inside of the rim, and XVitnesses:

flanged nut K, screwing upon the said rim, 0. S. NEWELL, screw-threaded for the purpose, the said cap- H. V. D. HOYT. 

